10 years of specialization in the development of applications based on PHP5 and last 8 years especially on Zend Framework, allows me to say "Yes" for most hard and interesting projects.
All my developer experience going in parallel with using of popular databases like MySQL and MongoDB, what help me to keep my clients feel happy when they trust me safety of their data.
In case of b2b development I have good practice with ExtJS 4 MVC based solutions.
Had a lot of projects which working tightly by REST and SOAP with 3rd part systems like: Amazon MWS, Ebay API, Google Products, etc.
Last 3 years work partly Team Leader of eCommerce project team, what expanded my knowledge of projects architecture, and i became better understanding projects planning based on Agile.